/*
 * Copyright (C) 2005 Luca Veltri - University of Parma - Italy
 *
 * This source code is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This source code is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this source code; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author(s):
 * Luca Veltri (luca.veltri@unipr.it)
 */

package local.net;



//import java.net.*;
import org.zoolu.net.*;
import org.zoolu.tools.Random;
import java.io.IOException;



/** RtpSocket implements a RTP socket for receiving and sending RTP packets. 
 * <p> RtpSocket is associated to a DatagramSocket that is used
 * to send and/or receive RtpPackets.
 */
public class RtpSocket
{
    /** UDP socket */
    private UdpSocket udp_socket;

    /** Remote address */
    private IpAddress remote_addr;

    /** Remote port */
    private int remote_port;

    /** Creates a new RTP socket (only receiver) */
    public RtpSocket(UdpSocket udp_socket)
    {  this.udp_socket=udp_socket;
        this.remote_addr=null;
        this.remote_port=0;
    }

    /** Creates a new RTP socket (sender and receiver) */
    public RtpSocket(UdpSocket udp_socket, IpAddress remote_address, int remote_port)
    {  this.udp_socket=udp_socket;
        this.remote_addr=remote_address;
        this.remote_port=remote_port;
    }

    /** Gets the UDP socket */
    public UdpSocket getUdpSocket()
    {  return udp_socket;
    }

    /** Gets the remote IP address */
    public IpAddress getRemoteAddress()
    {  return remote_addr;
    }

    /** Gets the remote port */
    public int getRemotePort() {
        return remote_port;
    }

    /** Receives a RTP packet from this socket */
    public void receive(RtpPacket rtpp) throws IOException {
        UdpPacket udp_packet = new UdpPacket(rtpp.packet, rtpp.packet.length);
        udp_socket.receive(udp_packet);
        rtpp.packet_len = udp_packet.getLength();
        remote_addr = udp_packet.getIpAddress();
        remote_port = udp_packet.getPort();
    }

    /** Sends a RTP packet from this socket */
    public void send(RtpPacket rtpp) throws IOException {
        UdpPacket udp_packet = new UdpPacket(rtpp.packet, rtpp.packet_len);
        udp_packet.setIpAddress(remote_addr);
        udp_packet.setPort(remote_port);
//        udp_packet.setIpAddress(udp_socket.getLocalAddress());
//        udp_packet.setPort(udp_socket.getLocalPort());
        udp_socket.send(udp_packet);
    }

    /** Closes this socket */
    public void close() {
        //udp_socket.close();
    }

}
